Index Fossils/ Law of Superposition

The _______________ of an Earth material is a measure of how old it actually is in years

• Absolute Age

• Relative Age

• Order

• Composition

Carbon dating is only reliable for materials that are up to about __________ years old

• 10,000

• 75,000

• 100,000

• 750,000

Relative age is the age of rocks and fossils (a)   to the ages of other rocks and fossils

Tags

NGSS.MS-ESS1-4

The ______________________ states that each rock layer or strata is older than the one above it.

• Law of Superposition

• Law of Relative Age

• Theory of Superposition

Tags

NGSS.MS-ESS1-4

Relative dating can be used only when the rock layers have been preserved in their _________________ sequence.

• main

• original

• layered

• superposition

Tags

NGSS.MS-ESS1-4

Beneath the surface, magma may push into bodies of rock. There, the magma cools and hardens into a mass of igneous rock called an _____________.

• extrusion

• intrusion

• fault

• unconformity

Tags

NGSS.MS-ESS2-1

An _________________ is a gap in the geologic record.

• fault

• unconformity

• fossil

• break

Tags

NGSS.MS-ESS1-4

A good index fossil is one with four characteristics: (check ALL that apply)

• abundant where a great number of these fossils have and can be found

• be found in top layer of rock

• distinctive and unique looking enough to identify easily

• widespread and found all over Earth

• lived a relatively short period of geologic time

_{Which rock layer contains the newest fossils?}

• F
• E
• B
• C

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

According to the law of superposition, the oldest fossils are found 

• At the top of the rock layers
• Near the bottom of the rock layers
• In the middle of the rock layers
• Somewhat near the surface

Tags

NGSS.MS-ESS1-4